This is where the harmonic balancer comes in. The circular device, made of rubber and metal, is bolted at the front end of the crankshaft to help absorb vibrations. It's usually connected to the crank pulley, which drives accessories like the air conditioner.
Additional costs: Ground water wells can also be tested for radon, then, if needed, can get a water radon mitigation system installed. Installing a water radon mitigation system runs from $1,000-$4,500, and maintenance runs $0 to $150 annually.
The US EPA estimates costs at about $350 - $500 for mitigation in new homes compared to costs of $800 - $2500 for installing upgrades in existing homes. 14 Removing radon from water can be much more expensive.t is the leading cause of lung cancer for non-smokers. 2 The New Jersey Department of Environmental Protection (NJ DEP) recommends radon testing for all homes in New Jersey. If the radon concentration is 4 pCi/L or higher, a radon mitigation system is recommended. The U.S. unit of radioactivity is the Curie (Ci).